【python】将指定的ip段，拆分为指定子网掩码的网络地址

python语言实现-拆分IP

    def calculateIpSubNetAndStore(self, task):
        ipStart = task[0].strip()
        ipEnd = task[1].strip()

        ipStartSList = ipStart.split(".")
        ipEndSList = ipEnd.split(".")

        subMask = IpAddrConvertAndStoreThread.calculateSubMask(ipStart, ipEnd)
        if ipStartSList[3] != "0" and ipEndSList[3] != '255' and subMask >= 24:
            ipStartSList.pop()
            ipNet = ".".join(ipStartSList)
            ipNet = ipNet + str(".0")
            saveIpaddrCustom(self._dbLimit, self._sqlEngine, ipNet, task)
            return

        startIp = ipaddress.ip_address(ipStart)
        endIp = ipaddress.ip_address(ipEnd)
        startSubnet = IpAddrConvertAndStoreThread.calculateStartSubnet(ipStart, subMask)
        netWork = ipaddress.ip_network(startSubnet + "/" + str(subMask), strict=False)

        maskGt24Flag = subMask == 24
        haveHitSubNet = False
        fistHitSubNet = None

        for r in netWork.subnets(new_prefix=24):
            rdata = r.network_address

            if maskGt24Flag and fistHitSubNet is None:
                # 取第一个网段作为当前记录的网络地址
                fistHitSubNet = r

            if rdata >= startIp and rdata <= endIp:
                haveHitSubNet = True
                saveIpaddrCustom(self._dbLimit, self._sqlEngine, r.network_address, task)
                continue

            if maskGt24Flag and haveHitSubNet is False:
                # 大于24位子网掩码,且在迭代中未命中的，则按第一个子网作为该记录的子网
                saveIpaddrCustom(self._dbLimit, self._sqlEngine, fistHitSubNet.network_address, task)

            if rdata > endIp:
                break

 # 计算开始迭代的超网子网掩码
    @staticmethod
    def calculateSubMask(ipStart: str, ipEnd: str) -> int:
        maskC = 0
        ipSList = ipStart.split(".")
        ipEList = ipEnd.split(".")
        for i in range(len(ipSList)):
            if ipSList[i] == ipEList[i]:
                maskC += 1
            else:
                break
        return maskC * 8

    # 基于子网掩码和开始地址计算超网地址
    @staticmethod
    def calculateStartSubnet(ipStart: str, mask: int) -> str:
        compareData = mask / 8
        ipSList = ipStart.split(".")
        newSubNetStr = str()
        for i in range(len(ipSList)):
            newSubNetStr += "."
            if i < compareData:
                newSubNetStr += str(int(ipSList[i]) & 255)
            else:
                newSubNetStr += str(int(ipSList[i]) & 0)
        return newSubNetStr[1:]